March 14 is commonly referred to as Pi Day, a day that aims to celebrate the ratio of the circumference of a circle.
About
The number is known as 14 or ? and can actually go on forever.
The most accurate value for Pi, according to Guinness World Records, is more than 62 trillion digits (62,831,853,071,796 to be precise), calculated in August 2021 by the University of Applied Sciences in Switzerland.